Even some peak-time trains experienced delays of up to 132 minutes when they left both stops. Under the revised schedule, there will be eight trains per way on Sundays and 15 trains per way on weekdays and Saturdays.

According to Iarnród Éireann, "feedback was positive" and most services operated on schedule on Tuesday.

The Irish government and the Shared Island Fund have contributed €25 million to the hourly train timetable.

Iarnród Éireann and Translink, the public transport provider in Northern Ireland, work together to run the Enterprise service.

Taoiseach (Irish Prime Minister) Simon Harris stated that the hourly service's inauguration was a "really, really important day for the all island economy, for the island of Ireland, from a public transport point of view" prior to the announcement of the new schedule.

The enlarged service "offers opportunities to drive jobs and growth, stimulate development and regeneration, and boost access to services and education," according to Stormont Infrastructure Minister John O'Dowd.

Additionally, he stated that the action will "assist in decarbonising transportation and promoting a shift in behaviour towards public transportation."